Spectacular Pseudo-Exfoliation of an Exfoliated-Compressed Graphite
Graphite exfoliation is a well-known process in carbon chemistry. An intercalation compound is first synthesized using reactants with strong redox properties. The intercalated graphite is then heated and the exfoliation occurs: a graphite vermicular powder is obtained. When recompressed, this powder...
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| Veröffentlicht in: | Journal of chemical education 2004-06, Vol.81 (6), p.819 |
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| container_title | Journal of chemical education |
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| creator | Comet, M Schreyeck, L Verdan, S Burato, G Fuzellier, H George Lisensky |
| description | Graphite exfoliation is a well-known process in carbon chemistry. An intercalation compound is first synthesized using reactants with strong redox properties. The intercalated graphite is then heated and the exfoliation occurs: a graphite vermicular powder is obtained. When recompressed, this powder gives carbon sheets such as Papyex or Flexigraf flexible graphites. These commercially available materials can be impregnated with an aluminum trichloride/diethylether solution whose oxidation by atmospheric oxygen, initiated by an open flame, reproduces the exfoliation phenomenon. This kind of reaction has been called pseudo-exfoliation of carbonaceous material. This demonstration spectacularly illustrates the layered nature of graphite.Find this demonstration and others in the DigiDemos area of the JCE Digital Library. |
| doi_str_mv | 10.1021/ed081p819 |
| format | Article |
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An intercalation compound is first synthesized using reactants with strong redox properties. The intercalated graphite is then heated and the exfoliation occurs: a graphite vermicular powder is obtained. When recompressed, this powder gives carbon sheets such as Papyex or Flexigraf flexible graphites. These commercially available materials can be impregnated with an aluminum trichloride/diethylether solution whose oxidation by atmospheric oxygen, initiated by an open flame, reproduces the exfoliation phenomenon. This kind of reaction has been called pseudo-exfoliation of carbonaceous material. This demonstration spectacularly illustrates the layered nature of graphite.Find this demonstration and others in the DigiDemos area of the JCE Digital Library.</description><identifier>ISSN: 0021-9584</identifier><identifier>EISSN: 1938-1328</identifier><identifier>DOI: 10.1021/ed081p819</identifier><identifier>CODEN: JCEDA8</identifier><language>eng</language><publisher>Easton: Division of Chemical Education</publisher><subject>Aluminum ; Carbon ; Chemical synthesis ; Chemistry ; Chlorides ; Exfoliation ; Experiments ; Graphite ; Intercalation compounds ; Materials science ; Organic chemistry ; Oxidation ; Science Experiments ; Science Instruction ; Scientific Principles</subject><ispartof>Journal of chemical education, 2004-06, Vol.81 (6), p.819</ispartof><rights>Copyright American Chemical Society Jun 2004</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/ed081p819$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/ed081p819$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,2752,27053,27901,27902,56713,56763</link.rule.ids><backlink>$$Uhttp://eric.ed.gov/ERICWebPortal/detail?accno=EJ717070$$DView record in ERIC$$Hfree_for_read</backlink></links><search><creatorcontrib>Comet, M</creatorcontrib><creatorcontrib>Schreyeck, L</creatorcontrib><creatorcontrib>Verdan, S</creatorcontrib><creatorcontrib>Burato, G</creatorcontrib><creatorcontrib>Fuzellier, H</creatorcontrib><creatorcontrib>George Lisensky</creatorcontrib><title>Spectacular Pseudo-Exfoliation of an Exfoliated-Compressed Graphite</title><title>Journal of chemical education</title><addtitle>J. Chem. Educ</addtitle><description>Graphite exfoliation is a well-known process in carbon chemistry. An intercalation compound is first synthesized using reactants with strong redox properties. The intercalated graphite is then heated and the exfoliation occurs: a graphite vermicular powder is obtained. When recompressed, this powder gives carbon sheets such as Papyex or Flexigraf flexible graphites. These commercially available materials can be impregnated with an aluminum trichloride/diethylether solution whose oxidation by atmospheric oxygen, initiated by an open flame, reproduces the exfoliation phenomenon. This kind of reaction has been called pseudo-exfoliation of carbonaceous material. 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Chem. Educ</addtitle><date>2004-06-01</date><risdate>2004</risdate><volume>81</volume><issue>6</issue><spage>819</spage><pages>819-</pages><issn>0021-9584</issn><eissn>1938-1328</eissn><coden>JCEDA8</coden><abstract>Graphite exfoliation is a well-known process in carbon chemistry. An intercalation compound is first synthesized using reactants with strong redox properties. The intercalated graphite is then heated and the exfoliation occurs: a graphite vermicular powder is obtained. When recompressed, this powder gives carbon sheets such as Papyex or Flexigraf flexible graphites. These commercially available materials can be impregnated with an aluminum trichloride/diethylether solution whose oxidation by atmospheric oxygen, initiated by an open flame, reproduces the exfoliation phenomenon. This kind of reaction has been called pseudo-exfoliation of carbonaceous material. 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| ispartof | Journal of chemical education, 2004-06, Vol.81 (6), p.819 |
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| language | eng |
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| source | ACS Publications |
| subjects | Aluminum Carbon Chemical synthesis Chemistry Chlorides Exfoliation Experiments Graphite Intercalation compounds Materials science Organic chemistry Oxidation Science Experiments Science Instruction Scientific Principles |
| title | Spectacular Pseudo-Exfoliation of an Exfoliated-Compressed Graphite |
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